Protector for electric plugs



Nov. 15, 1938. T. H. HONEY PROTECTOR FOR ELECTRIC PLUGS Filed March 20,1937 2 Sheets-Sheet l IHHIIIIIIIIHHHI`IIIIIIIHIHm/IH llllll Illlll 5Nov. 15, 1938. H HONEY PROTECTOR FOR ELECTRIC PLUGS Filed March 20, 19372 Sheets-Sheet 2 Inventor Patented Nov. 15, 1938 UNITED STATES PATENTOFFICE PROTECTOR FOR ELECTRIC PLUGS Thomas Henry Honey, New York, N. Y.

Application March 20, 1937, Serial No. 132,138

1 Claim.

This invention appertains to new and useful improvements in electricalconnectors and more particularly to a protector therefor.

The principal object of the present invention 5 is to provide aprotector for electric plugs which will serve to prevent pulling looseof the conductor wires from the plug which frequently causes shortcircuits and moreover such a condition is hazardous to persons handlingthe plug.

Other important objects and advantages of the invention will becomeapparent to the reader of the following specification.

In the drawings:-- i

Figure 1 represents a side elevational View of 15 the attachment appliedto a plug.

Figure 2 is another side elevational view of the attachment applied to aplug. l

Figure 3 is a sectional View taken substantially on the line 3-3 ofFigure 1.

Figure 4 is a fragmentary detailed sectional view through theattachment.

Figure 5 is a plan view of the attachment in blank.

Figure 6 is a fragmentary plan view of the blank shown in Figure 5 withone of the gripping blocks attached.

Figure 7 represents a perspective view of the spring clip.

Figure 8 is a cross sectional View taken substan- 30 tially on the line8-8 of Figure 6.

Referring to the drawings wherein like nu-gi merals designate likeparts, it can be seen that numeralA 5 represent the body of the plugfrom which extend the prongs 6 6. Numeral 'I denotes the usual cordthrough which the conductor wires 8 are disposed.

In carrying out the present invention, it can be seen in Figure 5. thatthe attachment consists of the circular member 9 preferably of 0 brousmaterial and, of course, having the property of electricity insulationand in this is the pair of slots Ill-I0 through which the prongs 6-6 ofthe plug can project as shown in Figures 1 and 2. Members I|II extendfrom diametrically opposite portions of the circular member 8 and fromthese extend reduced tongues I2-I2 each having openings I3 through whichfastening elements I4 can be disposed for securing the elongated rubberblocks I5 to the inner sides of the said tongues I2. Each of these saidrubber blocks I5 is provided With transversely extending corrugations afor firmly gripping the conductor cord I as suggested in Figures 2 and3.

One longitudinal edge portion of each of the tongues I2 is cut away asat I Ii for a distance equivalent to the length of the metallic springclip I'I which is engageable over the tongues I2 for tensionally urgingthe said resilient blocks I5 against the cord 1. 'I'he clip I'I isprovided with the short tongue I8 through which a pin I9 is disposed andinto one of the tongues I2 for piv otally supporting the clip I'l.

Obviously when desired, the clip I'I can be swung outwardly so that thetongues I2 are freed to permit removal of the attachment. Obviously, theattachment can be replaced and secured with equal ease.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to Without departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:-

A protector for electric plugs of the prong type comprising a plate ofinsulation having openings therein through which the prongs of the plugare disposable, said plate having tongue members adapted to be disposedlongitudinally of the usual cord of the plug, and resilient blocks onthe inner sides of the tongue members for engagement against the cord,and a spring clip pivotally secured to one of the tongue members andbeing adapted to embrace both of said tongue members and clamp theresilient blocks against a cord.

THOMAS HENRY HONEY.

